Cultivator



(N0 Model.)

E. L. WALKER. GULTIVATOR.

No. 249,702. Patented Nov. 15,1881.

N. PETRS. Plwlc-Lllhognplven Washmglon. 11cv Uwrrn STATES PATENT OFFICE.

EDWARD L. WALKER, OF TWIN GROVE, VVlSC-ONSIN.

CULTIVATO'R.

SPECIFICATION forming part of Letters Patent No. 249,702, dated November 15, 1881;

Application filed July 19, 1881. (No model.)

I do hereby declare that the following is a full,

clear, and exact description of the invention, which will enable others skilled in the art to which it pertains to make and use the same,

reference being had to the accompanying drawings, and to the letters of reference marked thereon, which form a part of this specification.

This invention relates to cultivators in which the plow-beams are adjustable relatively to each other, so as to adapt the cultivators to the varying width of the balk or to balks of different widths.

The invention consists, principally, in the combination, in a cultivator, of pivoted plowbeams having outwardly-projecting arms at their forward ends, connecting draft-bars attached to said arms, and means for adjusting said connecting draft-bars at difi'erent points upon the outwardly-projecting arms. By this means the draft-bars may be adjusted so as to vary the lateral tension of the draft upon the plow-beams and cause them to expand more or less to suit rows of different widths, while at the same time the beams will be free to move laterally at the will of the operator while the cultivator is in motion.

Figure 1 is a plan view of this improved cultivator. Fig. 2 is a vertical longitudinal section thereof on line a a; of Fig. 1. Fig. 3 is a top view of the attaching device for attaching the shovels to the plow-beams.

The plow-beams A A are bent inward at their rear ends, as shown at A A and pro vided at their front ends with forwardly and laterally projecting curved extension-arms A A, which are integral with or rigidly connected to the plow-beams, and with inwardlyprojecting connecting-plates A A The usual plow-handles, B, are attached to the plow beams. The plow-beams are connected in front by means of a bolt, a, which passes through the plates A? A and serves as a pivot on which they may be made to turn. The outer ends of the connecting orintermediate draftbars, 0, are adjustably attached to the extension-arms A A by means of bolts 1), or otherwise. Each of these arms is provided with a series of holes, so that the bars may be set nearer to or farther from the point of the plowbeam. The inner ends of these connectingbars meet at a point in advance of and inline with the pivot of the plow-beams, and are coupled to each other and to the central draftbar, D, by means of a bolt or pin, c.' The forward end of the central draft-bar is bent into the form of a book, 01, for the attachment of the single-tree, while its rear end slides on a slotted lug, c, secured to the pivot-pin of the plow-beams. eral bolt-holes, so that it may be set forward or back, to better adapt it to horses of different heights.

The forward shovel, E, is connected at the apex of the frame to the pivot-pin of the plowbeams, the rear shovels, E E to the inwardly-bent rear portion of the plow-beams, and theintermediate shovels, E E, to the laterally-extended or bulging portion of said beams. The rear and intermediate shovels, which are preferably mold-board shovels, are turned outward on each of the plow-beams,respectively. By this arrangement the forward shovel is held rigidly in the line of draft, the rear shovels are in position to close the furrows formed by the intermediate or outermost shovels, and all are sufficiently removed from each other to prevent their cloggiu g with weeds. The shanks of the shovels are slotted, and pivoted to the intermediate attaching device, 1*, in the usual manner, being held in place by means of bolts f, whereby they are allowed to swing up out of contact with unyielding obstacles.

The attaching device is composed of a horizontal plate, which rests against the under side of the plow-beams, and a shank projecting downward therefrom. This plate is pro vided with two lateral slots or notches, g 9, through which pass the clamping-bolts h, for holding it to the beam. By loosening the nuts of the bolts h the plate may be turned slightly, to enable the rear shovels to be adjusted to vary the width of the furrow.

As thus constructed this cultivator, while This bar is provided with sevmoving through the ground, may be readily expanded and contracted by the plowboy to suit the varying width of the balk or balks of different widths. According as the bars 0 are adjusted relatively to the extension-arms of the plow-beams the draft of the horse will have a tendency to spread or close the beams, and thus to expand or con tract the cultivator. In use it will be ascertained at what point of ad- 10 justment the plow-beams will have the least bars attached to said arms, and means'for adj ustin g said connecting draft-bars at different points upon the outwardly-projecting arms, whereby the lateral tension of the draft upon the pivoted plow-beams may be changed at will, substantially as described.

2. The combination, in a cultivator, of piv oted plow-beams having outwardly-projecting arms at their forward ends, pivoted connecting'dralt-hars attached to said arms,a central draft-bar attached to the pivot of the connecting-bars, and a slotted lug or guide attached to the pivot of the plow-beams, in which the rear end of said central draft-bar slides, sub stantially as described.

3. The combination, in a cultivator, of the pivoted plow-beams A A, provided with outwardly and inwardly curved rear extensions, A A forward outward extension-arms, A A, and connecting-plates A A, the central draftbar, D, and the intermediate connecting adjustable draft-bars, G, all substantially as described.

EDVVARD L. WALKER.

Witnesses:

G. M. \VALKER, D. P. GRosscUP. 

